After a violent incident in their shared past forces the lives of brothers Frank and Henry Lincoln to diverge, each carries on with his own brand of justice. Frank, who is very close to retirement, has spent his life becoming a distinguished member of the San Francisco police force. Meanwhile, Henry has devoted his life to being a vigilante whose own brand of justice is far more violent than the law allows. After 35 years, these brothers are brought together again by the murder of a Russian mafia boss in the city by the bay. Frank, caught between political turmoil and training his replacement as he leaves the force, comes face to face with Henry, who may have more than just answers about the murder.